var lightbox_detect = navigator.userAgent.toLowerCase();
var lightbox_os,lightbox_browser,lightbox_version,lightbox_total,lightbox_thestring;

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		lightbox_browser = "Konqueror";
		lightbox_os = "Linux";
	}
	else if (checkIt('safari')) lightbox_browser 	= "Safari"
	else if (checkIt('omniweb')) lightbox_browser 	= "OmniWeb"
	else if (checkIt('opera')) lightbox_browser 		= "Opera"
	else if (checkIt('webtv')) lightbox_browser 		= "WebTV";
	else if (checkIt('icab')) lightbox_browser 		= "iCab"
	else if (checkIt('msie')) lightbox_browser 		= "Internet Explorer"
	else if (checkIt('firefox')) lightbox_browser 		= "Firefox"
	else if (!checkIt('compatible')) {
		lightbox_browser = "Netscape Navigator"
		lightbox_version = lightbox_detect.charAt(8);
	}
	else lightbox_browser = "An unknown browser";

	if (!lightbox_version) lightbox_version = lightbox_detect.charAt(place + lightbox_thestring.length);

	if (!lightbox_os) {
		if (checkIt('linux')) lightbox_os 		= "Linux";
		else if (checkIt('x11')) lightbox_os 	= "Unix";
		else if (checkIt('mac')) lightbox_os 	= "Mac"
		else if (checkIt('win')) lightbox_os 	= "Windows"
		else lightbox_os 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = lightbox_detect.indexOf(string) + 1;
	lightbox_thestring = string;
	return place;
}

var lightbox = Class.create();

lightbox.prototype = {

	yPos : 0,
	xPos : 0,

	initialize: function(ctrl) {
		this.content = ctrl;
	},
	
	// Turn everything on - mainly the IE fixes
	activate: function(){
		if (lightbox_browser == 'Internet Explorer'){
			this.getScroll();
			this.setScroll(0,0);
			this.hideSelects('hidden');
		}
		this.prepareIE('100%', 'hidden');
		hideFlash();
		this.displayLightbox("block");
	},
	
	// Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
	prepareIE: function(height, overflow){
		bod = document.getElementsByTagName('body')[0];
		bod.style.height = height;
		bod.style.overflow = overflow;
  
		htm = document.getElementsByTagName('html')[0];
		htm.style.height = height;
		htm.style.overflow = overflow; 
	},
	
	// In IE, select elements hover on top of the lightbox
	hideSelects: function(visibility){
		selects = document.getElementsByTagName('select');
		for(i = 0; i < selects.length; i++) {
			selects[i].style.visibility = visibility;
		}
	},
	
	// Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
	getScroll: function(){
		if (self.pageYOffset) {
			this.yPos = self.pageYOffset;
		} else if (document.documentElement && document.documentElement.scrollTop){
			this.yPos = document.documentElement.scrollTop; 
		} else if (document.body) {
			this.yPos = document.body.scrollTop;
		}
	},
	
	setScroll: function(x, y){
		window.scrollTo(x, y); 
	},
	
	displayLightbox: function(display){
		$('overlay').style.display = display;
		$(this.content).style.display = display;
	},
	
	// Example of creating your own functionality once lightbox is initiated
	deactivate: function(){
		if (lightbox_browser == "Internet Explorer"){
			this.setScroll(0,this.yPos);
			this.hideSelects("visible");
		}
		this.prepareIE("auto", "auto");
		showFlash();
		this.displayLightbox("none");
	}
}
function addLightboxMarkup() {

	bod 				= document.getElementsByTagName('body')[0];

	overlay 			= document.createElement('div');
	overlay.id			= 'overlay';

	bod.appendChild(overlay);
}
function showFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "visible";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "visible";
	}
}

// ---------------------------------------------------

function hideFlash(){
	var flashObjects = document.getElementsByTagName("object");
	for (i = 0; i < flashObjects.length; i++) {
		flashObjects[i].style.visibility = "hidden";
	}

	var flashEmbeds = document.getElementsByTagName("embed");
	for (i = 0; i < flashEmbeds.length; i++) {
		flashEmbeds[i].style.visibility = "hidden";
	}

}
 
lightbox_loaded = 1;